Hi Guest! Great question – it will depend on the field of view for the xray. Here are the full descriptions of those two codes: 70150 – Radiologic examination, facial bones; complete, minimum of 3 views 70486 – Computed tomography, maxillofacial area; without contrast material United Healthcare states to use 70486 for CBCT in their radiology medical policy, here is a link to that policy (see page 89): Hope this helps!